<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>布局</title>
    <meta name="viewport" content="width=device-width.initial-scale=1,shrink-to-fit=no">
    <link rel="stylesheet" href="../command/bootstrap-4.3.1/css/bootstrap.min.css">
    <script src="../command/jquery/dist/jquery.min.js"></script>
    <script src="../command/bootstrap-4.3.1/js/bootstrap.min.js"></script>
    <script src="../command/bootstrap-4.3.1/js/bootstrap.bundle.min.js"></script>

</head>
<body>
<h1>bootstrap</h1>
<div class="container-fluid">//占用全屏
    <h1>布局</h1>
    <h2>布局内容</h2>

    <!--
    col-:所有的设备
    col-sm-:平板
    col-md-:电脑
    col-lg:大屏
    col-xl-:超大屏
    -->
    <div class="row">
        <div class="col-sm-3 col-md-3 col-lg-3">
            <p>占用3个栅格</p>
        </div>
        <div class="col-sm-9 col-md-9 col-lg-9"><p>占用9个栅格</p></div>
    </div>
    <div class="row">
        <div class="col-md-5"><p>占用5个栅格</p></div>
        <div class="col-md-5 offset-md-5"><p>占用5个栅格并设置偏移量为5个栅格</p></div>

    </div>

</div>

</body>
</html>